Home / 212,145.46-318,356.62-79,132.12

Finding the Fourth Proportional to 212,145.46, 318,356.62 and 79,132.12

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Solution

The fourth proportional to 212,145.46, 318,356.62 and 79,132.12 is: 118,749.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,145.46 : 318,356.62 = 79,132.12 : x
  2. Step 2: Convert to fraction form
    212,145.46/318,356.62 = 79,132.12/x
  3. Step 3: Cross multiply
    212,145.46x = 318,356.62 × 79,132.12
  4. Step 4: Simplify right side
    212,145.46x = 25,192,234,256.63
  5. Step 5: Solve for x
    x = 25,192,234,256.63/212,145.46
  6. Step 6: Final answer
    x = 118,749.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.